Self and david chambers



than eine @sind mijn.

JOHN CHAMBERS, OE BIRMINGHAM,l PENNSYLVANIA, ASSIGNOR TO HIM- SELE AND DAVID CHAMBERS, OF SAME PLACE.

Lette/rs Patent No. 99,160, dated January 25, 1870.

IIMPROVED MACHINE FOR REMO'V'ING- THE BLOW-OVER 0N GLASS JARS, &c.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern Be it known that I, J oHN CHAMBERS, of Birmingham, (Buchanan Post Oice,) in the county of Allegheny, and Stateof Pennsylvania, have invented a new and useful Improvement in M ode of Removing the Blow-Over in Glass Jars, and apparatus therefor; and I do hereby declare the following to b e a full, clear, and exact description thereof', reference being had` to the accompanying drawing, making a part of this specification, in which- Figure l is a perspective view of my improved apparatus, and

Figure 2 is a sectional view of the same.

Like letters of reference indicate like parts' of each.

In the manufacture of glass jars, the blow-over left on the month of the jar, as it comes from the mould, has heretofore been removed usually by the use of a saw-toothed knife, which, by the hand of the workman, is struck against the blow-over on its under side, close to the neck of thejar. This Yleaves the mouth of the jar nicked and uneven, so that it has to be ground, which being done by hand, considerably increases the cost. Also, by the means thus mentioned, many are broken.

I have found that by pressing the upper or outer edge of the mouth of the jar against a disk which moves with an oscillating rotary motion, the two sustaining such relation to each other that the face of the disk shall make at all points an acute angle to the axis of the jar, I am enabled to break off the blowover without nicking the mouth of the jar. the blow-over is thus removed, so smooth a mouth is left that the jars are then ready for market, whereby are saved the cost of and loss in grinding. At the same time, the blow-over is thus removed far more rapidly, whereby the cost of the jars is still further reduced,

and loss by breakage in grinding is wholly avoided..

And in such mode of operation, and in the construetion of apparatus therefor, consists the nature of my invention.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

The foundation a, of any suitable construction, supports t-he plumber-blocks b, on which rests the axleshaft c, to which power may be applied by a bandwheel, c', or in any other suitable way.

On the end of this axle-shaft c is a driving-wheel, d, on one of the arms or spokes (e) of which is a crankpin, e', the end of which operates in a socket in the end of, or it is in other suitable way jointed to the axle f.

This axle f has on its opposite end a disk-wheel, g,

When

and is supported by a standard, 71, through a slot or hole in which it plays freely, with a motion imparted to it by the revolution of the wheel d. This motion causes the wheel d to stand always at an acute angle to the axial line of the shaft c. This disk g is caused to operate with a regularly-wabbling or oscillating rotary motion as rapidly as may be desired.

The workman then takes up 'the jars' successively as they come fromthe mould, (the top of the blowover, being first removed,) and presents the mouth to and presses it against the disk, with the axial line of the jar as nearly as maybe in line with the axis of the shaft c. The breaking-pressure will thus act augularly to the mouth of .the jar, and break ofi' the blow-over along the line of its junction with the neck of the jar, so as to leave themouth plane'and smooth.

A single rotation ot the machine will remove the blow-over from the mouth of each jar so presented to the disk, and hence the jars can be finished up almost as rapidly as the wofkman can pick them up and set them down. They are then ready for the market, and do not require grinding, as in the old method.

The face of the disk g may be of metal, or other material possessing suicient hardness, but I prefer to make it of glass, and, in such case, I simply fasten a glass plate, n, -on to the face of the wheel g, securing it by clamps n, or by a frame-work, or in any other suitable manner. 0r the entire disk-'wheel g may be made of glass.

Also, I apply my invention to removing the blowover, not only from glass jars, but also from the glass globes of lanterns, from mustard and pepper-bottles, and other like articles of glass-ware.

Other modes of giving the motion indicated to the disk g may be substituted for that described.

What I claim as my invention, and desire to secure by Letters.Patent, is-

1. The method of removing theV blow-over from the articles of glass-manufacture, by presenting the mouth of each article to and pressing it against a disk which is caused to operate with an oscillating rotary motion, substantially as described.

2. A disk, g, mounted on a shaft, and caused to operate with a regularly-wabbling or oscillating rotary motion, substantially as described.

3. Making the operative face ofthe disk g of glass, 1

substantially as described.

I n testimony whereof', I, the said JOHN CHAMBERS, have hereunto set my hand.

JOHN CHAMBERS. Witnesses:

A. S. NICHOLSON, THOS. B. HERR. i 

